/
lookup.go
55 lines (42 loc) · 844 Bytes
/
lookup.go
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package geoip
import (
"net"
"github.com/oschwald/maxminddb-golang"
"github.com/safing/portbase/log"
)
func getReader(ip net.IP) *maxminddb.Reader {
if v4 := ip.To4(); v4 != nil {
return geoDBv4Reader
}
return geoDBv6Reader
}
// GetLocation returns Location data of an IP address
func GetLocation(ip net.IP) (record *Location, err error) {
dbLock.Lock()
defer dbLock.Unlock()
err = prepDatabaseForUse()
if err != nil {
return nil, err
}
db := getReader(ip)
record = &Location{}
// fetch
err = db.Lookup(ip, record)
// retry
if err != nil {
// reprep
handleError(err)
err = prepDatabaseForUse()
if err != nil {
return nil, err
}
db = getReader(ip)
// refetch
err = db.Lookup(ip, record)
}
if err != nil {
return nil, err
}
log.Tracef("geoip: record: %+v", record)
return record, nil
}